﻿<p>An <em>IfcBoundedSurface</em> is a surface of finite area.</p>
<blockquote class="extDef">NOTE&nbsp; Definition according to ISO/CD 10303-42:1992<br>
A bounded surface is a surface of finite area with identifiable boundaries.</blockquote>
<blockquote class="note">NOTE&nbsp; Entity adapted from <strong>bounded_surface</strong> defined in
ISO10303-42.</blockquote>
<blockquote class="history">HISTORY&nbsp; New entity in IFC2x</blockquote>
<blockquote class="change-ifc2x4">IFC4 CHANGE Entity made abstract.</blockquote>
<p class="spec-head">Informal Propositions:</p>
<ol>
<li>A bounded surface has finite non-zero surface area.</li>
<li>A bounded surface has boundary curves.</li>
</ol>